HyperFrames v0.8.42

Released on 2026-09-16.

Studio preview and render downloads now work for compositions and files with non-Latin-1 names. Forced --sdr renders tone-map HDR sources so colors match the Studio preview. HDR auto-promotion now shows up in check --json, and render workers no longer survive as orphans after Ctrl-C or a parent exit.

Fixes

• CLI: Stop render and preview worker processes from surviving as orphans after Ctrl-C, parent exit, or a stopped Windows wrapper. Carry cancellation through final artifact promotion so a cancelled render never replaces an existing output. Set HYPERFRAMES_RENDER_DETACHED=1 for intentionally detached renders (08d48ab75, #3974).
• Engine: Tone-map HDR sources before frame extraction on forced --sdr renders, fixing the cool color cast versus the Studio preview (ef48485b9, #3981).
• CLI: Report HDR auto-promotion in check --json with the triggering asset and resulting output pipeline, and print one render warning when it fires (5d2478c6f, #3985).
• Studio Server: Serve render downloads and file responses for non-Latin-1 filenames using RFC 6266 Content-Disposition headers (b599f031a, #3984).
• Studio Server: Fix a Studio preview server crash for compositions whose file path contains non-Latin-1 characters by hashing sub-composition paths into ASCII-safe ETags (edb6e87ba, #3982).

Internal

• Engine: Cover held tails in HDR preflight (ae18e3a32, #3963).

Full changelog

v0.8.41...v0.8.42